3Blue1Brown

3b1b Talent

A virtual career fair

Partners

Jane Street
Quantitative trading and technology
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Hong Kong, London, New York, and Singapore
Positional Encodings and Group Theory
0xPARC
Expanding what computers are capable of
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San Francisco
Doppel
AI defense against digital threats
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San Francisco, New York, Austin, Toronto, or remote (US and international)
MatX
High-throughput chips for LLMs
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SF Bay Area
Luminal AI
AI Inference Compilers
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San Francisco

Compiling models to megakernels

Standard GPU inference wastes time on kernel launch overhead, uneven work distribution, and memory access delays between operations. Luminal's compiler fuses entire neural network models into single GPU kernels — megakernels — using a dynamic global instruction queue that schedules work across streaming multiprocessors at runtime, eliminating the gaps that conventional approaches leave behind.

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BEAM
Pathways to STEM Excellence
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New York and Los Angeles
Oklo
Power | Fuel | Isotopes
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Santa Clara, CA, Idaho Falls, ID, and Remote
Exa
Attention over all the world's information
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San Francisco and Singapore

Exa's research vision is "Attention Over Everything." How do we attend over the world's 100 trillion tokens, at sub-200ms speed, to find the right information?

In that spirit, a small puzzle below: a message is hidden in a librarian's scroll. Can you follow the historical clues, find the important tokens, and decipher its meaning?

The Library of Alexandria existed for centuries. It served knowledge to citizens of the world and provided answers to all types of queries far and wide. A librarian, grey and weary, looked after the scrolls, and loved each and every one equally.

In 48 BCE, there was one final query delivered to the Library of Alexandria. It was a warning…

The library is soon to perish. Read only the most important words from your scrolls and use them to inscribe and deliver one message to the world. Enemies will find you. They must think your message is nonsense at first glance. Know how importance is reckoned: a word is important if important words stand near it. You can hold eighteen words in mind at once; two words within that span are joined. Joined or not joined. Cast out words that are just connectors before you begin. When the reckoning settles, save the eighteen worth most, and speak them in the order the scroll first spoke them.

And that's all we knew, until, on June 30th, 2021, the librarian's answer was finally found. One scroll of eighteen lines, found in front of a sign: ΕΞΑ.

If you can solve it, we'd love to hear from you.

Submit a solution

What is this?

These organizations are partners with 3Blue1Brown seeking to hire technically curious people like you. If this channel were a university, think of this as the campus career fair where you can find aligned opportunities. Explore the pages here to learn what makes each team unique.

If your organization would like to partner with us, please send an inquiry to talent@3blue1brown.com and we can explore whether it's a good fit. The main thing we care about is whether members of your technical team genuinely love working there.

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